Function finalize

src/serializers/schema_dependent/JsonSerializer.cpp:262–570

} // namespace

void POSTFIX_SCHEMA(JsonSerializer)::finalize() {
    json output;

    IfcSchema::IfcProject::list::ptr projects = file->instances_by_type<IfcSchema::IfcProject>();
    if (projects->size() != 1) {
        Logger::Message(Logger::LOG_ERROR, "Expected a single IfcProject");
        return;
    }
    IfcSchema::IfcProject* project = *projects->begin();

    auto catch_exceptions = [this](const auto& fn) {
        try {
            return fn();
        } catch (const std::exception& e) {
            Logger::Error(e);
            static std::invoke_result_t<decltype(fn)> v;
            return v;
        }
    };

    output["id"] = catch_exceptions([&]() { return file->header().file_name()->name(); });
    output["projectId"] = catch_exceptions([&]() { return project->GlobalId(); });
    output["author"] = catch_exceptions([&]() { return file->header().file_name()->author().empty() ? "unknown" : file->header().file_name()->author().front(); });
    output["createdAt"] = catch_exceptions([&]() { return file->header().file_name()->time_stamp(); });
    output["schema"] = catch_exceptions([&]() { return file->header().file_schema()->schema_identifiers().front(); }); // without schema we would not be here
    output["creatingApplication"] = catch_exceptions([&]() { return file->header().file_name()->originating_system(); });
    output["properties"] = json::array();
    output["propertySets"] = json::array();
    output["units"] = json::array();
    output["projectUnits"] = json::object();
    output["metaObjects"] = json::array();
    output["groups"] = json::array();

    // Maps for deduplication of properties and quantities
    std::map<const IfcUtil::IfcBaseEntity*, size_t> property_to_index;
    std::unordered_map<json, std::size_t> json_to_index;

    // Obtain sequence of units because properties, quantities reference them by index.
    // IfcUnit is a select of IfcDerivedUnit, IfcMonetaryUnit and IfcNamedUnit.
    // Unfortunately, instances_by_type() does not support select types directly (even though there isn't a real reason for that).
    IfcSchema::IfcUnit::list::ptr units(new IfcSchema::IfcUnit::list);
    units->push(file->instances_by_type<IfcSchema::IfcDerivedUnit>()->as<IfcSchema::IfcUnit>());
    units->push(file->instances_by_type<IfcSchema::IfcMonetaryUnit>()->as<IfcSchema::IfcUnit>());
    units->push(file->instances_by_type<IfcSchema::IfcNamedUnit>()->as<IfcSchema::IfcUnit>());

    auto format_property = [&](const IfcUtil::IfcBaseEntity* prop_) {
        json jprop;
        /*
        {
            "name": "LoadBearing",
            "ifcPropertyType": "IfcPropertySingleValue",
            "ifcValueType": "IfcBoolean",
            "value": "True",
            "valueType": "boolean"
        },
        */
        if (auto* prop = prop_->as<IfcSchema::IfcProperty>()) {
            jprop["name"] = prop->Name();